Drain valve for automobile crank cases



ocff, 192s. 1,699,994

J w. coMERFoRD. f

DRAIN VALVE FOR AUTOMOBILE CRANK CASES Filed Aug. 13, 1925 needs no further description.

y Patented oci. 3o, 192s.

nnenvnnvn non AUTOMOBILE (inerti: eesns.

liplnieanon finding-usi 13, 19e 7 serial no. Giano;

` Wy invention relates` to improvements inl drain valves for automobile crank, cases.

` The object of the invention istoprovide a drain valveftor a crank case Whichcenbe opernted troni within the hood of an automobile andtliusprevent'the necessity for getting.V

under tliefengine to drain the crank case and at the sanietin'ie provide a drnin valve which can ,he readily attached to any. oit the crank cases without any modification thereof.

Another object oiiny invention is to provide ny valveof this character which `can be readily applied to aV craint; enfle hy Vthe or'L i-` nary lnyinanlend :1t-fthe saine tiine provide a simple, cheap andeit'ecoi ve valve having certain details of structure and conihinationot parts hereinaftermore tnlly set forth.

` `inthe accompanying ldrawings h lfi'gnreyl is arti'zinsverse sectional vievv of the crank case oan autoniohiie engine show- "ii iuy improved drain valveA applied thereto.

lfiwure Q is a. 'vertical sectional view taken n v at right angles to '1* igure l.V y

Referrinfv now to the drzuvines"` l ren-e-V n v D1. sen thecranl case Otan anton'iooile engi-ne which is provided Wit-hlzi-nges secured'hy 1ooltsV 3 to the `flange 4 of, the cylinder hlock All of this is of theyordiinu'y c nistruction.and

The crank case oi. the ordinaryfnutoinohile engine is provided with a drainopening)r G in the bottoni of the crank caee. l VThis opening is usually closed by a.. thi'eaded pln'g. Applicants invention is directed tov every simple attachment for controlling the draining of the' oil from the crank case through. this opening-` nnd includesa pip'e4 7 `which is threafgled 'into the opening 6; `'lliis'pipe hasrigidly secured to its lower end a short length otpipe 8, which is arranged atan achte. angle to the pipe 7 and which has an opening coniiniinicating with the pipe 7., Attached tothe crank case isfa` bracket "9 having :1t-its loive-r endal cylindrical heeringl() which is in falinenient With and at the saine'angle as the vpipe 8 on the lower end of the pipe 7. Y

Extending through the cylindrical hearing 10 and the pipe 7 is e `control valve pipe 1l. This pipe l1 has an opening 13 in the side Wall thereof which is adapted to register with the open end of the pipe 7. The extreme lower end of the pipe ll is turned outwardly so as to limit the upward inoveinent of the pipe 11 in the pipe 8. Vhen the opening 13 is in register with the openingl leading' to the. pipe 75 then the oil will drain doivn through the pipeinto the pipe 1l and out through the open end of the pipe 141. When said pipe illis rotated so as to. bring the opening 13 out ot registry withy theA openin; leading to the pipe 7, then t-lieflovv Yof the oil will he cut oil). y The upper end ofthe pipe ll beyond the hearing l() is screiv-tlu'eaded as indicated at i3 and a nut. M tln'eaded onto the pipe hears afpainst-V tliehearii d holds the pipeV 1l roni endvvise inoveinent in the hearing` 10. i The upper end of the pipe l1 is internally threaded for a nnt plugfl which is screwed into the saine. Upon loosening the nut' le.` a Wrench inay he applied tothe nut pluig- 15 for tui-nino' the pipe ll, and when the pipe lll is turned to close the outlet.; then l0 otthehracletf 9 and tiliennt 14 may he turned down so af to secure the pipe li-in the set position with thelopening closed. i

means may he utilized for turning; the pi pe ll; also that the pipe l1 only 'functions i n pi pejlroni the opening;- 13 :to the c liscl'iarge end thereof, 'and therefore. the upper portion of lt will he understood, otcoui'seythatother this pipe ll can he changed as to structure.

ffhe essenti elA features `of the intention? con-V sist in the rotatable section of pipe serving' as a valve 'tor controlling the discharge of the oil lironipthe crank casing and the operating nieans; which is in line therevvithand which entends to apoint at, the side ot' the engine casing* Where it is accessible for operation.v

lhiving thus deserihediny invention, Vwhat I'claini as new :1nd desire to secure' hy Letters Patentiis: I N l y y Y l; 'lhe combination njitlija crank case oil? an antonioblile, a.;dischaicjepipe connected to theh'ottoln'ofthe cig'ankfcase, an ohliquely arrangc'dlpiperigidly carried-hy the lovve'r end of" the discharge pipe and communicating thereni th'7 a val e pipe extending' through the Qli'lqnelyj arranged pipe and having en open- 4 Cil The combination with a crank caee orF an automobile, of a discharge pipe connected to the bottom ot the crank case, an obriquely arranged pipe connected to the lower end ot the discharge pipe in communication therewith, a pipe rotatably mounted in the obliqueljy' arranged pipe and haring an opening adaptedV to connnunieate with the lower end ol the discharge pipe, a bracket carried by the crunk carzc through which the upper end ol' the last mentioned pipe extends, a lock nut on the upper end ot the pipe for locking the :same to the bracket againet rotation, and means for rotating said pipe.

3. The combination with a crank case ot an automobile, ot a pipe secured to the bottom ol the. crank case, an obliquelv arranged pipe rigidlxY secured to the lower end oi the diS charge pipe and in eonnnuni tation therewith, a pipe rotatablvy mounted in the oblique@Y arranged pipe and having an opening adapted to communi Aate with the opening in the lower end of the discharge pipe. a. bracket secured to the crank cas-,e and having enlarged bearing through which the upper end olE the laat mentitmed pipe pasiaes. a nut acrewed upon the upper end ot the pipe and engagingr the. bracket Vlor locking the pipe in its adjusted poaition, and means it'or receivingl a tool l'or rotating said pipe.

4. The combination with a. crank case ot an automobile. ot a. discharge pipe connected to the bottom ol' the crank rase. an obliquely arranged pipe rijgridl)v carried by the lower end ot the discharge pipe and in communicaton therewithf a pipe extending through the obliquely arranged pipe and secured against -upward movement therein and having an openingcommunicating with the lower' end of the diacharge pipe, a bracket secured to the crank case and having an enlarged obliquely arranged bearing throufrh which the upper end olf the pipe extends, a nut screwed upon the upper end ot the pipe and adapted to engage the bearing and means carried b v the upper end ot the pipe Ytor rtaeiving a. tool wherelrv the same can be rotated.

'l`he combination with ay crank casing ot an automobile. ol a discharge pipe connected with the bottom ot the crank casing. an obliuuelj,y arranoed pipe connected to the lower end ot said hret-named pipe and having an opening conmlunicating therewith, a bracket attached tothe side of the casing and having a sleeve bearing in alinement with the ob lique pipeJ a hollow cylindrical valve mounted in said oblique pipe and sleeve bearing and having an opening adapted to be brought into registry with the opening in the oblique pipe or to turn so as to close said opening1 and mean1 lior securing said. cylindrical valve in .set position lor closing the drain opening.

t3. A detachable oil drain and valve for the crank casing olf an automobile comprising a discharge pipe adapted to be connected with the bottom ol the crank caeing, an obliqucly arranged pipe connected to the. lower end ol' said tiret named pipe and having an opening communicatingr therewith, a bracket adapted to be attached at the side of the crank casing and having a sleeve bearing in alinement with the oblique pipe7 a tube member constituting a. hollow cylindrical valve and operating stem mounted in said oblique pipe and `aleere bearing and having an opening adapted to be brought into registry with the opt-ning in tbe oblique'liipe or to be turned so as to close said opei'iing, Said tube serving when in registry to permit the drainage of' oil from Said crank casing into and through said tube to be diechaiM d from the lower end thereof, and meanav for Securing said tube in set. posi tion tor eloeing the drain openin 1f.

7. The combination with the crank casing ot an autonuibile, olt a discharge pipe connected to the bottom ot' the crank easing. an ohlitpiellvr arranged pipe connected to the iower end of the discharge pipe and baring an opening at its side to establish connnunication therewith, a tube rotatably mounted in the obliquely arranged pipe and constituting a hollow cylindrical valve and haring a. side openingl therein adapted to eonnnuni 'ate with the lower end of the discharge pipe through said tiret opening, a bracket carried b v the crank caaiug and providing a journal t'or the upper end of said tubee the lower end ol said tube haring a periliheral flange to en gage the low r end of said obliquely arranged pipe to prevent axial movement ol'I said tube in one direction` the upper end ot eaid tube being threaded, and a lock nut on the threaded upper end of the tube to limit movement oli the tube in the other direction, said lock nut being adaped to cooperate with said bracket to prevent; rotation olE -aaid tube about its axis.

ln testimony whereof, l atlix my signature.

WILLIA M COMERFORD.

lJU 

